🚀 go-pugleaf

Graham E Kinns <Graham@grempc.demon.co.uk> wrote:

>With the Small build of KA9Q, adding a few more #ifdef wrappers, to 
>prevent the linking of unused code and data, reduces the exe 
>size/increases free memory by around 50K.  Configuring out things like 
>like rlogin, zmodem support, tracing, daemons like timed, remoted, 
>fingerd, ttylinkd and the dos shell support increase this to nearer 
>the 100K mark.

Hi,
	when I was hacking ka9q I did a lot of this kind of thing, as I recall
it's possible to get a report that contains info about unused functions, you can
really fine tune the binary using this. Unfortunately I don't have the Borland
manuals to hand to point you at it.
I also stumbled onto some info about the way DOS allocates memory. DOS allocates
free memory from below 640K in preference to allocating it from above.  I was
able to get quite a bit of extra memory by forcing DOS to allocate memory from
the high area before the low area.  I've attached a zip file containing

extramem.c - a module that changes the DOS memory allocation strategy.
main.c - my changes to the main.c function to enable the extramem.
makefile - ditto above.

Tuning your config.sys/ autoexec.bat  can really help, with extramem.c compiled
in, I think I only had himem.sys and a mouse driver loaded. I was able to shell
out of tiny textwin while online running several ftp sessions, news etc.

Hope this helps, let me know how you get on if you use it.

Iain

Don't unzip this file into your ka9q source directory.

section 1 of uuencode 5.22 of file extramem.zip   

begin 644 extramem.zip
<uuencoded_portion_removed>
`
end

Iain Douglas